Home / 28,086,000.60-42,129,000.90-19,981,853.40

Finding the Fourth Proportional to 28,086,000.60, 42,129,000.90 and 19,981,853.40

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Solution

The fourth proportional to 28,086,000.60, 42,129,000.90 and 19,981,853.40 is: 29,972,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086,000.60 : 42,129,000.90 = 19,981,853.40 : x
  2. Step 2: Convert to fraction form
    28,086,000.60/42,129,000.90 = 19,981,853.40/x
  3. Step 3: Cross multiply
    28,086,000.60x = 42,129,000.90 × 19,981,853.40
  4. Step 4: Simplify right side
    28,086,000.60x = 841,815,519,872,268
  5. Step 5: Solve for x
    x = 841,815,519,872,268/28,086,000.60
  6. Step 6: Final answer
    x = 29,972,780.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.